package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.PasswordConstant;
import com.sky.constant.StatusConstant;
import com.sky.context.BaseContext;
import com.sky.dto.EmployeeDTO;
import com.sky.dto.EmployeeLoginDTO;
import com.sky.dto.EmployeePageQueryDTO;
import com.sky.entity.Employee;
import com.sky.exception.AccountLockedException;
import com.sky.exception.AccountNotFoundException;
import com.sky.exception.CurrentUserHasCreate;
import com.sky.exception.PasswordErrorException;
import com.sky.mapper.EmployeeMapper;
import com.sky.result.PageResult;
import com.sky.service.EmployeeService;
import com.sky.utils.JwtUtil;
import com.sky.utils.Md5Util;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.util.DigestUtils;
import sun.security.provider.MD5;

import java.time.LocalDateTime;
import java.util.List;

@Service
public class EmployeeServiceImpl implements EmployeeService {

    @Autowired
    private EmployeeMapper employeeMapper;

    @Override
    public PageResult getPageInfo(EmployeePageQueryDTO employeePageQueryDTO) {
        PageHelper.startPage(employeePageQueryDTO.getPage(),employeePageQueryDTO.getPageSize());

        Page<Employee> pageInfo = employeeMapper.pageInfo(employeePageQueryDTO);
        PageResult pageResult = new PageResult();
        pageResult.setTotal(pageInfo.getTotal());
        List<Employee> employeeList = pageInfo.getResult();
        pageResult.setRecords(employeeList);
        return pageResult;
    }

    @Override
    public void updateStatus(Integer status, Long id) {
      Employee e = Employee.builder()
                .id(id)
                .status(status).build();
      employeeMapper.update(e);
    }

    /**
     *
     * @param id
     * @return
     */
    @Override
    public Employee findEmployeeById(Long id) {
        return employeeMapper.findEmployeeById(id);
    }

    @Override
    public void updateEmployee(Employee employee) {
        employeeMapper.update(employee);
    }


    /**
     * 员工登录
     *
     * @param employeeLoginDTO
     * @return
     */
    public Employee login(EmployeeLoginDTO employeeLoginDTO) {
        String username = employeeLoginDTO.getUsername();
        String password =  Md5Util.getMD5String(employeeLoginDTO.getPassword());
        //1、根据用户名查询数据库中的数据
        Employee employee = employeeMapper.getByUsername(username);

        //2、处理各种异常情况（用户名不存在、密码不对、账号被锁定）
        if (employee == null) {
            //账号不存在
            throw new AccountNotFoundException(MessageConstant.ACCOUNT_NOT_FOUND);
        }

        //密码比对
        // TODO 后期需要进行md5加密，然后再进行比对
        if (!password.equals(employee.getPassword())) {
            //密码错误
            throw new PasswordErrorException(MessageConstant.PASSWORD_ERROR);
        }

        if (employee.getStatus() == StatusConstant.DISABLE) {
            //账号被锁定
            throw new AccountLockedException(MessageConstant.ACCOUNT_LOCKED);
        }

        //3、返回实体对象
        return employee;
    }

    /**
     * 新增员工
     * @param employeeDTO
     * @return
     */
    @Override
    public void addEmployee(EmployeeDTO employeeDTO) {
        Employee e = this.findEmployeeByUserName(employeeDTO.getUsername());
//        if (e != null){
//            throw new CurrentUserHasCreate("当前账号已经被注册");
//        }
        Employee employee  = new Employee();
        BeanUtils.copyProperties(employeeDTO,employee);

        employee.setStatus(StatusConstant.ENABLE);
        employee.setPassword(Md5Util.getMD5String(PasswordConstant.DEFAULT_PASSWORD));
        employeeMapper.addEmployee(employee);
    }

    @Override
    public Employee findEmployeeByUserName(String userName) {
        Employee e = employeeMapper.findEmployeeByUserName(userName);
        return e;
    }

}
